package com.qk.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;
import com.qk.dto.UserDto;
import com.qk.entity.User;
import com.qk.exception.BusinessException;
import com.qk.mapper.UserMapper;
import com.qk.service.UserService;
import com.qk.utils.JwtUtils;
import com.qk.vo.LoginResultVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public PageResult<User> list(UserDto userDto) {
        //1. 设置分页参数
        PageHelper.startPage(userDto.getPage(), userDto.getPageSize());

        //2. 调用mapper接口查询
        List<User> userList = userMapper.selectList(userDto);

        //3. 解析并封装结果
        Page<User> page = (Page<User>) userList;
        return new PageResult<>(page.getTotal(), page.getResult());
    }

    @Override
    public void add(User user) {
        //1. 补全基础属性
        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());

        //2. 设置默认密码
        String password = user.getUsername() + "123";
        user.setPassword(DigestUtils.md5DigestAsHex(password.getBytes())); // md5加密

        //3. 调用mapper
        userMapper.insert(user);
    }


    @Override
    public void deleteByIds(List<Integer> ids) {

        userMapper.deleteByIds(ids);
    }

    @Override
    public void update(User user) {
        //更新时间
        user.setUpdateTime(LocalDateTime.now());
        //加密处理
        user.setPassword(DigestUtils.md5DigestAsHex((user.getPassword()+"123").getBytes()));
        userMapper.update(user);
    }


    @Override
    public User getUserById(Integer id) {



        return userMapper.selectById(id);
    }

    @Override
    public List<User> listByRoleLabel(String roleLabel) {
        return userMapper.listByRoleLabel(roleLabel);
    }

    @Override
    public LoginResultVo login(User user) {
        //1.调用Mapper接口查询
        User u = userMapper.selectByUsername(user.getUsername());
        //2.判断用户是否存在
        if(u == null){
            log.info("用户不存在");
            throw new BusinessException("用户名或密码错误");
        }
        //3.判断密码是否正确
        String _pass = DigestUtils.md5DigestAsHex(user.getPassword().getBytes());
        if(!_pass.equals(u.getPassword())){
            log.info("密码错误");
            throw new BusinessException("用户名或密码错误");

        }

        //4.判断状态是否正确
        if(u.getStatus() != 1){
            log.info("用户已停用");
            throw new BusinessException("用户已停用");

        }
        //5.返回结果
        LoginResultVo loginResultVo = new LoginResultVo();
        loginResultVo.setId(u.getId());
        loginResultVo.setUsername(u.getUsername());
        loginResultVo.setName(u.getName());
        loginResultVo.setImage(u.getImage());
        loginResultVo.setRoleLabel(u.getRoleLabel());


        //调用工具类，生成jwt令牌
        Map<String, Object> claims = new HashMap<>();
        claims.put("id",u.getId());
        claims.put("username",u.getUsername());
        String jwt = JwtUtils.generateToken(claims);
        loginResultVo.setToken(jwt);
        return loginResultVo;

    }

    @Override
    public List<User> listAllNormal() {
        return userMapper.listAllNormal();

    }

    @Override
    public List<User> listByDeptId(Integer deptId) {
        return userMapper.listByDeptId(deptId);
    }
    }

